A series of experiments covering lowest three natural frequencies of rolling coupled pitching were conducted to investigate liquid sloshing with low liquid depth. The test results show that the most violent liquid sloshing in rolling and pitching is located in the vicinity of the first order natural frequency (f₁). When the excitation frequency of rolling and pitching is located between 0.98f₁ and 1.113f₁, roof-bursting phenomenon of liquid appeared, and the maximum impact pressure is at 1.09f₁. When the external excitation frequency is at 1.113f₁, the number of sloshing shocks decreases sharply. Furthermore, the space distribution of the impact pressure on the left bulkhead and the top bulkhead was analyzed. It is concluded that with low liquid filling, the impact load is greater near the free surface and the top of tank, and the impact position of the side bulkhead increases with the increasing of the frequency near the resonant frequency.

进行了一系列涵盖滚动耦合俯仰的最低三个自然频率的实验，以研究低液深的液体晃动。测试结果表明，滚动和俯仰中最剧烈的液体晃动位于一阶固有频率（f ₁）附近。当滚动和俯仰位于0.98之间的激励频率˚F ₁和1.113 ˚F ₁中，液体屋顶爆裂现象出现，并且最大冲击压力为1.09 ˚F ₁。当外部激励频率为1.113 f _1时，晃动冲击的次数急剧减少。此外，分析了左侧舱壁和顶部舱壁的冲击压力的空间分布。结论是，在低液位下，靠近液面和液舱顶部的冲击载荷较大，并且随着共振频率附近频率的增加，侧舱壁的冲击位置也随之增大。